body,
html {
  width: 100%;
  height: 100%;
  display: flex;
}
div {
  position: relative;
  margin: auto;
  width: 120px;
  line-height: 64px;
  text-align: center;
  color: #fff;
  font-size: 20px;
  border: 2px solid gold;
  border-radius: 10px;
  background: gold;
  transition: all 0.3s;
  cursor: pointer;
}
div:hover {
  filter: contrast(1.1);
}
div:active {
  filter: contrast(0.9);
}
div::before,
div::after {
  content: "";
  position: absolute;
  top: -10px;
  left: -10px;
  right: -10px;
  bottom: -10px;
  border: 2px solid gold;
  animation: clippath 3s infinite linear;
  border-radius: 10px;
}
div::after {
  animation: clippath 3s infinite -1.5s linear;
}
@keyframes clippath {
  0%,
  100% {
    clip-path: inset(0 0 98% 0);
  }
  25% {
    clip-path: inset(0 98% 0 0);
  }
  50% {
    clip-path: inset(98% 0 0 0);
  }
  75% {
    clip-path: inset(0 0 0 98%);
  }
}
